"If they weren't there," Huerta said of the shiny chrome-sided Taqueria "El Pecas" truck, "I'd be selling right now."

That may change Tuesday, if Los Angeles County supervisors place new restrictions on the mobile grills that patrons praise as icons of East L.A. life but competitors disparage as a nuisance.

"I don't think any resident of East L.A. would complain about a taco truck here," said Jorge Jimenez, who grew up nearby and now drives from downtown most days to grab lunch or dinner.

"It's a convenient service to the community."

Some taco trucks park in the same place all day, despite an existing law that requires they move every 30 minutes. But because the fine is only $60, many truck owners view it as a cost of doing business.

The new restrictions, proposed by Supervisor Gloria Molina, would increase the penalty for violating the law to a misdemeanor punishable by a $1,000 fine and/or a six-month jail sentence. To soften the blow, however, she would extend the time a catering truck can be parked in one place from 30 minutes to an hour.

Restaurant owners have long complained to county officials that taco trucks have an unfair advantage: If customers don't come to them, they can drive to the customers. And because they are small and mobile, their overhead costs are comparatively low.

"I'm for people succeeding, but it's so hard for us who are established to be able to survive," said Huerta, who has been a business owner in East L.A. for nearly 25 years.

But taco vendors see it differently: They say they provide good and affordable food to communities that sometimes lack places to eat.

"It's sort of a turf war that goes on between the vendors and the merchants," said Molina, who represents East Los Angeles. "It's a tough situation for us."

One thing taco vendors and restaurant owners agree on is that the proposed county law would put the brakes on the mobile eateries.

"Our business is a huge investment for us, and this law is going to suddenly shut us down," said Martin Velasquez, who paid $30,000 for his truck seven years ago and has been parked off Whittier Boulevard nightly ever since.

Some say that newly emerging businesses in a community with more restaurants and cafes than ever are rendering mobile restaurants obsolete -- and unwanted.

"They prohibit a community from moving forward," said Ron Mukai, a longtime developer in the community. "They make it unattractive for legitimate brick-and-mortar businesses to come in. Why would a restaurant come in when there's 10 catering trucks on Olympic Boulevard? There was a time when catering trucks filled a legitimate need because there was no willing vendor in East L.A. But for the sake of bettering the community, their time has passed."

So for the last couple of years, business owners have been pressuring political leaders to pass tougher punishments on motorized restaurants.

"All the restaurants around here, we talk and we have the same problem," said Victor Sanchez, who owns Tacos Mexico, a 24-hour restaurant on Olympic Boulevard. "I'm bringing in money for the county. But a truck? One day he's there and the other day he's not."

The tug-of-war between taco trucks and restaurants is not limited to East Los Angeles. Businesses in South Los Angeles have also registered complaints with their supervisor, Yvonne B. Burke.

"It just makes the community look like there's no order," said Maria Cerdas, a deputy for Burke.

Taco truck owners, however, say that what is being proposed is a draconian solution to an inflated problem. So they've hired a lawyer -- for $400 an hour -- to argue their case.

"They're going to force them out of the business, and if that's not going to hurt their livelihood, what else would?" said Philip C. Greenwald, an attorney who has specialized in defending catering trucks for 40 years. "I think it's unfair and improper."

Catering trucks must pass a number of health inspections before they are allowed to operate. And there are other requirements. For example, trucks must be parked within 200 feet of a bathroom, be equipped with soap, towels and hot water, and owners must prove they have access to a facility where they can wash and store their vehicles.

"We'll know their routes and we will stop them on the street as we see them," said Terrance Powell of the county's environmental health division.

Still, Powell said inspectors sometimes have trouble keeping up with the nearly 14,000 taco trucks registered with the county -- and there may be as many as 28,000 more that operate illegally.

"I can say we spend an inordinate amount of time addressing illegal vending," Powell said. "They have a method in which they are alerted that there is an enforcement presence, and they flee the scene before we get to them."

But for lovers of taco trucks, including downtown Los Angeles resident Jorge Jimenez, East L.A. wouldn't be the same without them.

"They're a restaurant too," he said as he waited for his order at Taqueria "El Pecas," not far from Huerta's restaurant. "That they choose to be mobile instead of stationary is not their fault. Actually, it's ingenious."

His quesadillas and burritos, enough food for five people, cost him $20.